View Compilation Error

0_0_26272345_7026.cpp:27:1: error: 'ss' does not name a type
 ss
 ^
0_0_26272345_7026.cpp: In function 'void solve(int)':
0_0_26272345_7026.cpp:41:45: error: 'dfs' was not declared in this scope
             d[v] = d[root] << a[v], dfs(v, u), d[root] |= d[v];
                                             ^